As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO DOOR EICAS AND LT ILLUM AFTER TAKEOFF AT APPROX 4000 FT AGL, COMPLETED QRN PROD. RETURNED TO DEPARTURE AIRPORTT/S AND FOUND CODE "006" ON PSEU BITE CK. R/R CARD #6 W/REF TO AMM 32-09-06. OPS CK IAW AMM 32-09-06-704-011. OPS CK OK.